Corrupt Installation Detected - error during installation

If you receive "corrupt installation detected" when running the
installation, then the file was incompletely downloaded. This happens from time
to time. Unfortunately, attempting to download it again will usually result in
the browser cache handing you the same, corrupt file again (but much faster!)

So go back to our download page, and download
again but this time use the "Secondary
Site" link. This will confuse the browser, so that it won't
give you the same incomplete file again.